| 摘要 |
An engine having a cylinder, piston having a skirt having an actuating member, a upper rocker-arm being pivotally coupled to the intake valve, a first push-rod, said being pivotally coupled to the upper rocker arm, a lower rocker-arm being pivotally connected to the push-rod, the lower rocker-arm being positioned so as to engage the actuating member of the piston.
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